WO2021184647A1 - Feed lifting rock trimming assembly and sewing machine comprising same - Google Patents

Feed lifting rock trimming assembly and sewing machine comprising same Download PDF

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Publication number
WO2021184647A1
WO2021184647A1 PCT/CN2020/107007 CN2020107007W WO2021184647A1 WO 2021184647 A1 WO2021184647 A1 WO 2021184647A1 CN 2020107007 W CN2020107007 W CN 2020107007W WO 2021184647 A1 WO2021184647 A1 WO 2021184647A1
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Prior art keywords
lifting
thread
driving
tooth
crank
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PCT/CN2020/107007
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French (fr)
Chinese (zh)
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黄明学
万义明
林晓晓
洪志敏
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杰克缝纫机股份有限公司
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Priority to CN202010196368.5 priority Critical
Priority to CN202010196368.5A priority patent/CN111197203B/en
Application filed by 杰克缝纫机股份有限公司 filed Critical 杰克缝纫机股份有限公司
Publication of WO2021184647A1 publication Critical patent/WO2021184647A1/en

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    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B27/00Work-feeding means
    • D05B27/02Work-feeding means with feed dogs having horizontal and vertical movements
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B65/00Devices for severing the needle or lower thread

Abstract

A feed lifting rock trimming assembly and a sewing machine comprising same. The feed lifting rock trimming assembly comprises a drive portion (2), and a front feed lifting rock shaft (12) and a rear feed lifting rock shaft (18) which are provided in parallel. The front feed lifting rock shaft (12) is fixedly provided with a front feed lifting rock crank (14); the rear feed lifting rock shaft (18) is fixedly provided with a rear feed lifting rock crank (16); the front feed lifting rock crank (14) is rotatably connected to a first end of a front feed lifting rock swing plate (20); the rear feed lifting rock crank (16) is rotatably connected to a first end of a rear feed lifting rock swing plate (21); the drive portion (2) is connected to a feed lifting rock drive device and a trimming drive device (501); a second end of the front feed lifting rock swing plate (20) and a second end of the rear feed lifting rock swing plate (21) are rotatably connected to one end of the feed lifting rock drive device, separately; after the drive portion (2) drives, the height of a feed dog is adjusted; the trimming drive device (501) is connected to a trimming drive portion (07); after the drive portion (2) drives, the trimming drive portion (07) and a trimming cam (05) can synchronously rotate to achieve trimming. The feed lifting rock trimming assembly can conveniently and rapidly control the height of the feed dog, can achieve the linkage of feed lifting rock and a trimming operation, and reduces the structural complexity while improving the production efficiency.

Description

一种抬牙剪线组件和具有该抬牙剪线组件的缝纫机Thread-lifting and thread-cutting component and sewing machine with the thread-lifting and thread-cutting component
本申请要求于2020年3月19日提交中国专利局、申请号为202010196368.5、发明名称为“一种抬牙剪线组件和具有该抬牙剪线组件的缝纫机”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on March 19, 2020, the application number is 202010196368.5, and the invention title is "a thread-raising thread trimmer assembly and a sewing machine with the thread-raising thread trimmer assembly". The entire content is incorporated into this application by reference.
技术领域Technical field
本发明涉及缝纫设备技术领域,特别涉及一种抬牙剪线组件和具有该抬牙剪线组件的缝纫机。The present invention relates to the technical field of sewing equipment, in particular to a thread-lifting and thread-cutting assembly and a sewing machine with the thread-lifting and thread-cutting assembly.
背景技术Background technique
众所周知,缝纫机是用一根或多根缝纫线,在缝料上形成一种或多种线迹,使一层或多层缝料交织或缝合起来的机器,缝纫机通常由送料装置、机座、传动和附件四部分组成,通过各机构的运动合理地配合,循环工作,把缝料缝合起来。As we all know, the sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing materials. The sewing machine usually consists of a feeding device, a base, The transmission and accessories are composed of four parts, and the movement of each mechanism is reasonably coordinated, and the sewing material is stitched together.
在现有技术中,针对缝纫机尤其是平缝机,其送料牙的水平运动方向由送料轴控制,送料牙的竖直运动方向由抬牙轴控制,水平方向与竖直方向的相位由送料偏心轮决定,最终形成送料牙椭圆形轨迹。当缝纫布料厚度变化时,为达到更好的缝纫效果,牙齿高度需要调节。现在常规缝纫机调节牙齿高度复杂,并且无法精确控制。在起缝放置布料时,牙齿处于高位,会出现挂布的情况。In the prior art, for sewing machines, especially lockstitch machines, the horizontal movement direction of the feeding teeth is controlled by the feeding shaft, the vertical movement direction of the feeding teeth is controlled by the lifting shaft, and the phase of the horizontal and vertical directions is controlled by the feeding eccentricity. The wheel decides, and finally forms the elliptical trajectory of the feeding teeth. When the thickness of the sewing fabric changes, in order to achieve a better sewing effect, the height of the teeth needs to be adjusted. Nowadays, conventional sewing machines are complicated to adjust the tooth height and cannot be precisely controlled. When the fabric is placed at the beginning of the seam, the teeth are in a high position and the fabric will hang.
与此同时,针对剪线操作,往往在剪线后线头较长,不利于提高生产质量。At the same time, for trimming operations, the thread ends are often longer after trimming, which is not conducive to improving production quality.
综上,如何提供一种能够方便快速地实现抬牙和剪线操作联动的缝纫机是本领域技术技术人员需要思考的技术问题。In summary, how to provide a sewing machine capable of conveniently and quickly realizing the linkage of the thread lifting and thread trimming operations is a technical problem that those skilled in the art need to think about.
发明内容Summary of the invention
本发明的目的是提供一种抬牙剪线组件和具有该抬牙剪线组件的缝纫机,能够方便快速的控制送料牙的高度,并且可以实现抬牙和剪线操作联动,在提高生产效率的同时降低结构的复杂性。The purpose of the present invention is to provide a thread-lifting and thread-cutting assembly and a sewing machine with the thread-lifting and thread-cutting assembly, which can conveniently and quickly control the height of the feeding teeth, and can realize the linkage of the thread-raising and thread-cutting operations, and improve production efficiency. At the same time reduce the complexity of the structure.
为实现上述目的,本发明提供一种抬牙剪线组件,包括驱动部,还包括平行设置的前抬牙轴以及后抬牙轴,前抬牙轴固设有前抬牙曲柄,后抬牙轴固设有后抬牙曲柄,前抬牙曲柄转动连接有前抬牙摆动板的第一端,后抬牙曲柄转动连接有后抬牙摆动板的第一端;In order to achieve the above objective, the present invention provides a tooth lifting thread trimmer, which includes a driving part, and also includes a front lifting shaft and a rear lifting shaft that are arranged in parallel, and the front lifting shaft is fixed with a front lifting crank and a rear lifting tooth. The shaft is fixedly provided with a rear tooth lifting crank, the front tooth lifting crank is rotatably connected with the first end of the front tooth lifting swing plate, and the rear tooth lifting crank is rotatably connected with the first end of the rear tooth lifting swing plate;
驱动部连接有抬牙驱动装置和剪线驱动装置,前抬牙摆动板的第二端和后抬牙摆动板的第二端两者分别转动相连于抬牙驱动装置的一端;经驱动部驱动后,前抬牙曲柄和后抬牙曲柄两者之间的夹角改变,以使前抬牙轴和后抬牙轴两者发生相对转动,以调节送料牙的高度;The driving part is connected with the thread lifting driving device and the thread trimming driving device. The second end of the front lifting swing plate and the second end of the rear lifting swing plate are respectively connected to one end of the lifting driving device in rotation; driven by the driving part Later, the included angle between the front lifting crank and the rear lifting crank is changed so that the front lifting shaft and the rear lifting shaft can rotate relative to each other to adjust the height of the feeding teeth;
剪线驱动装置连接剪线驱动部;经驱动部驱动后,剪线驱动部能够和剪线凸轮同步旋转,以实现剪线。The thread trimming driving device is connected with the thread trimming driving part; after being driven by the driving part, the thread trimming driving part can rotate synchronously with the thread trimming cam to realize the thread trimming.
可选地,抬牙驱动装置包括抬牙调节摆动连杆,前抬牙摆动板的第二端和后抬牙摆动板的第二端两者分别转动连接于抬牙调节摆动连杆的一端,抬牙调节摆动连杆通过传动装置连接驱动部,当驱动部驱动后,抬牙调节摆动连杆摆动。Optionally, the tooth-lifting driving device includes a tooth-lifting adjustment swing link, and the second end of the front-tooth-lifting swing plate and the second end of the rear-tooth-lifting swing plate are respectively rotatably connected to one end of the tooth-lifting adjustment and swing link, The tooth-lifting adjustment swing link is connected to the driving part through a transmission device, and when the driving part is driven, the tooth-lifting adjustment swing link swings.
可选地,剪线驱动装置包括滚珠、摆动部和传导部,滚珠固设于剪线驱动部,传导部和摆动部相连,当摆动部在驱动部输出轴的作用下运动预设角度时,摆动部触发传导部运动,滚珠在传导部的运动作用下和剪线凸轮相抵,以使滚珠和剪线凸轮同步旋转。Optionally, the thread trimming driving device includes a ball, a swinging part, and a conducting part. The ball is fixed on the thread trimming driving part, and the conducting part is connected with the swinging part. When the swinging part moves at a predetermined angle under the action of the output shaft of the driving part, The oscillating part triggers the movement of the conducting part, and the ball is against the thread trimming cam under the action of the conducting part, so that the ball and the thread trimming cam rotate synchronously.
可选地,传动装置包括摇杆、驱动连杆和驱动曲柄,驱动曲柄的第一位置和驱动部的输出轴固定相连,驱动曲柄的第二位置转动连接于驱动连杆的第一端,驱动连杆的第二端转动连接摇杆的第一位置,摇杆的第二位置转动连接抬牙调节摆动连杆,摇杆的第三位置转动连接于固定端。Optionally, the transmission device includes a rocker, a driving connecting rod, and a driving crank. The first position of the driving crank is fixedly connected to the output shaft of the driving part. The second position of the driving crank is rotatably connected to the first end of the driving connecting rod. The second end of the connecting rod is rotatably connected to the first position of the rocker, the second position of the rocker is rotatably connected to the lifting adjustment swing link, and the third position of the rocker is rotatably connected to the fixed end.
可选地,剪线驱动部固设于剪线驱动轴,摆动部具体为旋转曲柄,传导部具体为异形杆,异形杆包括位于同一面上的剪线斜面和等距面,异形杆的端部和旋转曲柄转动连接;剪线斜面和等距面两者可选择地和剪线驱动轴接触;Optionally, the thread trimming drive part is fixed on the thread trimming drive shaft, the swing part is specifically a rotating crank, and the conduction part is specifically a special-shaped rod. The part and the rotating crank are connected in rotation; both the thread trimming slope and the equidistant plane can be selectively contacted with the thread trimming drive shaft;
当剪线斜面和剪线驱动轴接触时,滚珠和剪线凸轮相抵,以使滚珠和剪线凸轮同步旋转。When the thread trimming bevel is in contact with the thread trimming drive shaft, the ball and the thread trimming cam abut to make the ball and the thread trimming cam rotate synchronously.
可选地,异形杆的端部设有折弯段,折弯段包括两块间隔设置的安装 板,两块安装板开设同轴的限位孔,旋转曲柄的端部开设限位槽,限位销的两端分别和两个限位孔配合,且限位销和限位槽配合,以使异形杆和旋转曲柄转动连接。Optionally, the end of the special-shaped rod is provided with a bending section, and the bending section includes two mounting plates arranged at intervals. The two ends of the positioning pin are respectively matched with the two limiting holes, and the limiting pin is matched with the limiting groove, so that the special-shaped rod and the rotating crank are rotationally connected.
可选地,传动装置具体为调节偏心轮,驱动部的输出轴固设于调节偏心轮的偏心孔,抬牙调节摆动连杆的端部转动连接于调节偏心轮;Optionally, the transmission device is specifically an adjusting eccentric wheel, the output shaft of the driving part is fixed to the eccentric hole of the adjusting eccentric wheel, and the end of the lifting adjusting swing link is rotatably connected to the adjusting eccentric wheel;
摆动部具体为剪线杠杆,剪线杠杆的第一端转动连接于固定位置,剪线杠杆的第二端和调节偏心轮滑动配合;The swing part is specifically a thread trimming lever, the first end of the thread trimming lever is rotatably connected to a fixed position, and the second end of the thread trimming lever is in sliding fit with the adjusting eccentric wheel;
传导部设于远离剪线杠杆第二端的位置上,当调节偏心轮旋转预设角度时,剪线杠杆旋转,在剪线杠杆的带动下,传导部推动剪线驱动部,以使滚珠和剪线凸轮相抵。The conductive part is located at a position far away from the second end of the thread trimming lever. When the preset angle of the eccentric wheel is adjusted, the thread trimming lever rotates. The line cams offset.
可选地,还包括剪线支架,剪线杠杆转动连接于剪线支架,剪线支架还设有复位弹簧,复位弹簧套设于固定在剪线支架上的杠杆限位销,复位弹簧位于剪线杠杆和传导部之间的夹角处,以使剪线杠杆复位至未推动剪线驱动部的位置上;剪线驱动部和弹性部相连,以使剪线驱动部复位至未被传导部推动的位置上。Optionally, it further includes a thread trimming support, the thread trimming lever is rotatably connected to the thread trimming support, the thread trimming support is also provided with a return spring, the return spring is sleeved on the lever limit pin fixed on the thread trimming support, and the return spring is located in the trimmer The angle between the thread lever and the conducting part to reset the thread trimming lever to the position where the thread trimming drive part is not pushed; the thread trimming drive part is connected with the elastic part to reset the thread trimming drive part to the non-conducting part Push the position.
可选地,前抬牙曲柄包括前锁紧端和前延伸端,前锁紧端和前延伸端相连,前锁紧端包绕于前抬牙轴,前延伸端沿前抬牙轴的径向外侧延伸,和/或;Optionally, the front lifting crank includes a front locking end and a front extension end, the front locking end and the front extension end are connected, the front locking end is wrapped around the front lifting shaft, and the front extension end is along the diameter of the front lifting shaft Extend outward, and/or;
后抬牙曲柄包括后锁紧端和后延伸端,后锁紧端和后延伸端相连,后锁紧端包绕于后抬牙轴,后延伸端沿后抬牙轴的径向外侧延伸。The rear lifting crank includes a rear locking end and a rear extension end, the rear locking end and the rear extension end are connected, the rear locking end wraps around the rear lifting shaft, and the rear extension end extends along the radial outside of the rear lifting shaft.
本发明还提供一种缝纫机,包括上述的抬牙剪线组件。The present invention also provides a sewing machine, including the above-mentioned thread lifting and trimming assembly.
相对于上述背景技术,本发明提供的抬牙剪线组件,利用驱动部带动抬牙驱动装置和剪线驱动装置运动,从而实现送料牙高度的调节和剪线动作;具体地,抬牙剪线组件利用平行设置的前抬牙轴和后抬牙轴取代了现有技术中的一根抬牙轴,前抬牙轴固定有前抬牙曲柄,后抬牙轴固定有后抬牙曲柄,前抬牙曲柄转动连接有前抬牙摆动板的第一端,后抬牙曲柄转动连接有后抬牙摆动板的第一端,前抬牙摆动板的第二端和后抬牙摆动板的第二端两者分别转动相连于抬牙驱动装置的一端;经过驱动部的驱动,抬牙驱动装置动作后,前抬牙曲柄和后抬牙曲柄两者之间的夹角改变,也 即前抬牙轴和后抬牙轴两者之间发生相对旋转,前抬牙轴和后抬牙轴两者的相位角发生变化,从而起到调节送料牙高度的目的。简而言之,本申请将抬牙轴设置为分体式,前抬牙轴和后抬牙轴两者平行设置,也可以同轴设置,前抬牙轴和后抬牙轴的相位可以根据缝纫工况进行调节,从而控制送料牙的高度。可以看出,根据实际需要,还可以在放置布料时,让送料牙的高度下降至针板以下,避免挂送料牙挂布。与此同时,经过驱动部的驱动,剪线驱动装置动作后,能够实现剪线驱动部和剪线凸轮的同步旋转,进而完成剪线操作。如此设置,利用驱动部这一单一动力源即可完成送料牙高度的调节和剪线动作在提高生产效率的同时降低结构的复杂性。Compared with the above-mentioned background technology, the thread-lifting and thread-cutting assembly provided by the present invention utilizes the driving part to drive the thread-lifting driving device and the thread-cutting driving device to move, so as to realize the height adjustment of the feeding teeth and the thread-cutting action; specifically, the thread-lifting and thread-cutting The component uses a front tooth lifting shaft and a rear tooth lifting shaft arranged in parallel to replace a tooth lifting shaft in the prior art. The first end of the front lifting crank is connected to the front lifting swing plate, the rear lifting crank is connected to the first end of the rear lifting swing plate, the second end of the front lifting swing plate and the second end of the rear lifting swing plate. The two ends are respectively connected to one end of the tooth-lifting drive device by rotation; after the drive of the driving part, the tooth-lifting drive device moves, the angle between the front and rear tooth-lifting cranks changes, that is, the front-lifting crank Relative rotation occurs between the tooth shaft and the rear tooth shaft, and the phase angle of the front tooth shaft and the rear tooth shaft is changed, thereby achieving the purpose of adjusting the height of the feeding tooth. In short, in this application, the lifting shaft is set as a split type, and the front lifting shaft and the rear lifting shaft are arranged in parallel or coaxially. The phase of the front lifting shaft and the rear lifting shaft can be adjusted according to the sewing The working conditions are adjusted to control the height of the feeding teeth. It can be seen that, according to actual needs, the height of the feeding dog can be lowered below the needle plate when placing the fabric to avoid hanging the feeding dog hanging cloth. At the same time, after the thread trimming driving device is driven by the driving part, the thread trimming driving part and the thread trimming cam can be synchronously rotated to complete the thread trimming operation. With this arrangement, the single power source of the driving part can be used to complete the height adjustment of the feeding teeth and the thread trimming action, which improves the production efficiency and reduces the complexity of the structure.
本发明提供的缝纫机,具有上述有益效果,本文将不再赘述。The sewing machine provided by the present invention has the above-mentioned beneficial effects, which will not be repeated here.
附图说明Description of the drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据提供的附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work.
图1为本发明实施例所提供的具有抬牙剪线组件的缝纫机的正视图;Figure 1 is a front view of a sewing machine with a thread-lifting and thread-cutting assembly provided by an embodiment of the present invention;
图2为本发明实施例所提供的具有抬牙剪线组件的缝纫机的底视图;Figure 2 is a bottom view of a sewing machine with a thread-lifting and thread-cutting assembly provided by an embodiment of the present invention;
图3为本发明实施例所提供的第一种抬牙剪线组件的抬牙驱动装置的结构图;FIG. 3 is a structural diagram of the first tooth-lifting driving device of the tooth-lifting and thread-cutting assembly provided by an embodiment of the present invention;
图4为本发明实施例所提供的第一种抬牙剪线组件的抬牙驱动装置的爆炸图;4 is an exploded view of the first tooth lifting driving device of the tooth lifting and cutting thread assembly provided by an embodiment of the present invention;
图5为图4的局部爆炸图;Figure 5 is a partial exploded view of Figure 4;
图6为图5中的摇杆结构图;Figure 6 is a structural diagram of the rocker in Figure 5;
图7为本发明实施例所提供的第一种抬牙剪线组件的抬牙驱动装置在送料牙处于最高点时的示意图;FIG. 7 is a schematic diagram of the first thread-lifting driving device of the thread-lifting and trimming assembly provided by the embodiment of the present invention when the feeding teeth are at the highest point;
图8为本发明实施例所提供的第一种抬牙剪线组件的抬牙驱动装置在送料牙处于最低点时的示意图;FIG. 8 is a schematic diagram of the first tooth lifting driving device of the thread lifting and trimming assembly provided by the embodiment of the present invention when the feeding teeth are at the lowest point;
图9为本发明实施例所提供的第一种抬牙剪线组件的剪线驱动装置在 送料牙处于最低点时的示意图;9 is a schematic diagram of the first thread cutting drive device of the thread-lifting thread-cutting assembly provided by the embodiment of the present invention when the feeding tooth is at the lowest point;
图10为图9中的异形杆的结构示意图;Fig. 10 is a schematic diagram of the structure of the special-shaped rod in Fig. 9;
图11为本发明实施例所提供的第一种抬牙剪线组件的驱动部在旋转过程中的功能区间图;FIG. 11 is a functional section diagram of the driving part of the first thread-lifting and thread-cutting assembly provided by the embodiment of the present invention during the rotation process;
图12-图14分别为本发明实施例所提供的第一种抬牙剪线组件在不同功能状态下的示意图;Figures 12-14 are schematic diagrams of the first thread-lifting and thread-cutting assembly provided by an embodiment of the present invention in different functional states;
图15为本发明实施例所提供的第二种抬牙剪线组件的示意图;15 is a schematic diagram of a second thread-lifting and thread-cutting assembly provided by an embodiment of the present invention;
图16为本发明实施例所提供的第二种抬牙剪线组件的抬牙驱动装置的爆炸图;16 is an exploded view of the second tooth lifting driving device of the tooth lifting and cutting thread assembly provided by an embodiment of the present invention;
图17为本发明实施例所提供的第二种抬牙剪线组件的剪线驱动装置的爆炸图;Figure 17 is an exploded view of the second thread cutting drive device of the thread-lifting thread-cutting assembly provided by the embodiment of the present invention;
图18为图17的局部爆炸图;Figure 18 is a partial exploded view of Figure 17;
图19为本发明实施例所提供的第二种抬牙剪线组件的驱动部在旋转过程中的功能区间图;19 is a diagram of the functional interval of the driving part of the second thread-lifting and thread-cutting assembly provided by the embodiment of the present invention during the rotation process;
图20-图22分别为本发明实施例所提供的第二种抬牙剪线组件在不同功能状态下的示意图。Figures 20-22 are schematic diagrams of the second thread-lifting and thread-cutting assembly provided by an embodiment of the present invention in different functional states.
其中:in:
上轴1、驱动部2、送料组件3、抬牙轴组件4、剪线组件5、剪线驱动装置501、送料轴6、抬牙叉型曲柄7、送料偏心轮8、抬牙连杆9、送料连杆10、抬牙后曲柄11、前抬牙轴12、前抬牙轴套13、前抬牙曲柄14、抬牙调节销15、后抬牙曲柄16、后抬牙轴套17、后抬牙轴18、前抬牙曲柄销19、前抬牙摆动板20、后抬牙摆动板21、后抬牙曲柄销22、抬牙调节摆动连杆24、摆动连杆销25、摇杆26、第一连接孔261、第二连接孔262、第三连接孔263、连杆销27、轴位连接件28、驱动连杆29、驱动曲柄30、支架31、送料牙32、针板33、调节偏心轮301、Upper shaft 1, driving part 2, feeding assembly 3, lifting spindle assembly 4, thread trimming assembly 5, thread trimming drive device 501, feeding shaft 6, lifting fork crank 7, feeding eccentric 8, and lifting connecting rod 9 , Feeding connecting rod 10, rear crank 11, front lift shaft 12, front lift sleeve 13, front lift crank 14, lift adjustment pin 15, rear lift crank 16, rear lift sleeve 17, Rear tooth lifting shaft 18, front tooth lifting crank pin 19, front tooth lifting swing plate 20, rear tooth lifting swing plate 21, rear tooth lifting crank pin 22, tooth lifting adjustment swing link 24, swing link pin 25, rocker 26. The first connecting hole 261, the second connecting hole 262, the third connecting hole 263, the connecting rod pin 27, the axial connecting piece 28, the driving connecting rod 29, the driving crank 30, the bracket 31, the feeding teeth 32, the needle plate 33 , Adjust the eccentric wheel 301,
旋转曲柄001、异形杆002、限位销003、剪线斜面0021、等距面0022、安装板0023、限位孔0024、限位槽0011、Rotating crank 001, special-shaped rod 002, limit pin 003, thread trimming bevel 0021, equidistant surface 0022, mounting plate 0023, limit hole 0024, limit slot 0011
剪线驱动轴01、剪线凸轮05、弹性部06、剪线驱动部07、剪线驱动抵靠面08、推动端09、滚珠022、复位弹簧023、剪线杠杆024、滚动部 025、杠杆限位销026、杠杆轴位螺钉027、剪线支架028。Thread trimming drive shaft 01, thread trimming cam 05, elastic part 06, thread trimming drive part 07, thread trimming drive abutment surface 08, push end 09, ball 022, return spring 023, thread trimming lever 024, rolling part 025, lever Limit pin 026, lever axis screw 027, trimming bracket 028.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
为了使本技术领域的技术人员更好地理解本发明方案,下面结合附图和具体实施方式对本发明作进一步的详细说明。In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
实施例一:Example one:
本发明实施例所提供的一种抬牙剪线组件,如说明书附图1至附图14,包括驱动部2、前抬牙轴12和后抬牙轴18,驱动部2连接抬牙驱动装置和剪线驱动装置501。An embodiment of the present invention provides a tooth-lifting thread trimmer assembly, as shown in Figures 1 to 14 of the specification, including a driving part 2, a front tooth-lifting shaft 12, and a rear tooth-lifting shaft 18, and the driving part 2 is connected to the tooth-lifting driving device And thread trimming drive device 501.
前抬牙轴12和后抬牙轴18平行设置,送料轴6的一端和送料组件3固定连接,送料轴6的另一端和送料摆动板座组件固定连接。送料组件3用以完成送料牙32的运动轨迹控制,抬牙轴组件4用以完成抬牙相位调节,送料摆动板座组件完成送料相位变化,本申请的一个重点改进部分即为抬牙轴组件4。The front lifting shaft 12 and the rear lifting shaft 18 are arranged in parallel, one end of the feeding shaft 6 is fixedly connected to the feeding assembly 3, and the other end of the feeding shaft 6 is fixedly connected to the feeding swing plate seat assembly. The feeding assembly 3 is used to control the motion trajectory of the feeding teeth 32, the lifting spindle assembly 4 is used to complete the lifting phase adjustment, and the feeding swing plate seat assembly completes the feeding phase change. A key improvement part of this application is the lifting spindle assembly 4.
参考现有技术可知,送料偏心轮8固定在上轴1上,抬牙连杆9的一端转动连接于送料偏心轮8,抬牙连杆9的另一端转动连接于抬牙后曲柄11。送料连杆10的一端转动连接于送料偏心轮8,送料连杆10的另一端转动连接于送料摆动板座组件;当然,抬牙连杆9和送料连杆10分别转动连接于送料偏心轮8的不同位置。With reference to the prior art, it can be known that the feeding eccentric 8 is fixed on the upper shaft 1, one end of the lifting link 9 is rotatably connected to the feeding eccentric 8, and the other end of the lifting link 9 is rotatably connected to the crank 11 after lifting the teeth. One end of the feeding link 10 is rotatably connected to the feeding eccentric 8, and the other end of the feeding link 10 is rotatably connected to the feeding swing plate seat assembly; of course, the lifting link 9 and the feeding link 10 are respectively rotatably connected to the feeding eccentric 8 Different locations.
抬牙叉型曲柄7固定在前抬牙轴12上,抬牙后曲柄11两者分别固定在后抬牙轴18上,前抬牙轴12和前抬牙曲柄14固定连接,后抬牙轴18和后抬牙曲柄16固定连接,前抬牙曲柄14转动连接前抬牙摆动板20的第一端,后抬牙曲柄16转动连接后抬牙摆动板21的第一端。The fork type crank 7 is fixed on the front lifting shaft 12, the rear crank 11 is fixed on the rear lifting shaft 18, the front lifting shaft 12 and the front lifting crank 14 are fixedly connected, and the rear lifting shaft is fixed. 18 and the rear lifting crank 16 are fixedly connected, the front lifting crank 14 is rotatably connected to the first end of the front lifting swing plate 20, and the rear lifting crank 16 is rotatably connected to the first end of the rear lifting swing plate 21.
本申请中,前抬牙摆动板20的第二端和后抬牙摆动板21的第二端分 别和抬牙驱动装置的一端转动连接,也即通过抬牙驱动装置将前抬牙摆动板20和后抬牙摆动板21相连,显然可以认为的是,通过抬牙驱动装置将前抬牙轴12和后抬牙轴18相连。In the present application, the second end of the front lifting swing plate 20 and the second end of the rear lifting swing plate 21 are respectively rotatably connected with one end of the lifting driving device, that is, the front lifting swinging plate 20 is rotated by the lifting driving device. It is connected to the back lifting swing plate 21. Obviously, it can be considered that the front lifting spindle 12 and the rear lifting spindle 18 are connected by the lifting driving device.
经过驱动部2的驱动,抬牙驱动装置动作,使得前抬牙曲柄14和后抬牙曲柄16之间的夹角改变,也即前抬牙轴12和后抬牙轴18之间相对旋转,两者的相位角改变,从而调节送料牙32的高度,如说明书附图7和附图8。Driven by the driving part 2, the tooth-lifting driving device moves, so that the angle between the front tooth-lifting crank 14 and the rear tooth-lifting crank 16 changes, that is, the front tooth-lifting shaft 12 and the rear tooth-lifting shaft 18 rotate relative to each other. The phase angle of the two is changed, thereby adjusting the height of the feeding dog 32, as shown in FIG. 7 and FIG. 8 of the specification.
与此同时,经过驱动部2的驱动,带动剪线驱动装置动作,使得剪线驱动部07能够和剪线凸轮05同步旋转,以实现剪线。与现有技术一致的是,剪线凸轮05固设于下轴,剪线驱动部07固设于剪线驱动轴01,下轴带动剪线凸轮05旋转,当剪线驱动部07和剪线凸轮05同步旋转时,则剪线驱动轴01发生旋转,此时剪线组件5即可完成剪线操作。At the same time, the thread trimming driving device is driven by the driving part 2 to make the thread trimming driving part 07 rotate synchronously with the thread trimming cam 05 to realize the thread trimming. Consistent with the prior art, the thread trimming cam 05 is fixed on the lower shaft, the thread trimming drive part 07 is fixed on the thread trimming drive shaft 01, and the lower shaft drives the thread trimming cam 05 to rotate. When the cam 05 rotates synchronously, the thread trimming drive shaft 01 rotates, and the thread trimming assembly 5 can complete the thread trimming operation.
针对驱动部2,其可采用步进电机、活塞缸、伺服电机等动力与案件提供动力,并可以通过同步带、齿轮传动、蜗轮蜗杆等传动机构实现动力的传递。For the driving part 2, it can be powered by stepping motors, piston cylinders, servo motors and other power and cases, and can realize power transmission through transmission mechanisms such as timing belts, gear transmissions, worm gears, and so on.
参考说明书附图4至附图8,驱动部2可包括抬牙调节摆动连杆24,抬牙调节摆动连杆24和驱动部2之间可通过同步带、齿轮传动、蜗轮蜗杆等传动装置连接,实现动力的传递,前抬牙曲柄14和后抬牙曲柄16两者分别位于抬牙调节摆动连杆24一端的两侧。With reference to Figures 4 to 8 of the specification, the driving part 2 may include a tooth lifting adjustment swing link 24. The tooth lifting adjustment swing link 24 and the driving part 2 can be connected by a transmission device such as a timing belt, gear transmission, worm gear, etc. , To realize power transmission, the front crank 14 and the rear crank 16 are respectively located on both sides of one end of the swing link 24 for adjusting the teeth.
前抬牙曲柄14可固定于前抬牙轴12的端部,后抬牙曲柄16可固定于后抬牙轴18的端部,本实施例优选前抬牙曲柄14和后抬牙曲柄16相邻设置,也即前抬牙曲柄14和后抬牙曲柄16分别位于抬牙调节摆动连杆24一端的两侧。The front lifting crank 14 can be fixed to the end of the front lifting shaft 12, and the rear lifting crank 16 can be fixed to the end of the rear lifting shaft 18. In this embodiment, the front lifting crank 14 and the rear lifting crank 16 are preferably the same. The front crank 14 and the rear crank 16 are located adjacent to each other.
当抬牙调节摆动连杆24在驱动部2的作用下运动时,同时带动前抬牙摆动板20和后抬牙摆动板21运动,进而带动前抬牙曲柄14和后抬牙曲柄16,调节前抬牙曲柄14和后抬牙曲柄16之间的夹角,改变前抬牙轴12和后抬牙轴18之间的相位角,从而调节送料牙32的高度。传动装置包括摇杆26、驱动连杆29和驱动曲柄30,驱动曲柄30的第一位置和驱动部2的输出轴固定相连,当驱动部2运动时,输出轴转动,带动驱动曲柄30同步转动。When the swing link 24 for adjusting the tooth lifting moves under the action of the driving part 2, it simultaneously drives the front lifting swing plate 20 and the rear lifting swing plate 21 to move, thereby driving the front lifting crank 14 and the rear lifting crank 16 to adjust The angle between the front lifting crank 14 and the rear lifting crank 16 changes the phase angle between the front lifting spindle 12 and the rear lifting spindle 18, thereby adjusting the height of the feeding teeth 32. The transmission device includes a rocker 26, a driving connecting rod 29 and a driving crank 30. The first position of the driving crank 30 is fixedly connected with the output shaft of the driving part 2. When the driving part 2 moves, the output shaft rotates, driving the driving crank 30 to rotate synchronously .
驱动曲柄30的第二位置转动连接于驱动连杆29的第一端,驱动连杆29的第二端转动连接摇杆26的第一位置,摇杆26的第二位置转动连接抬牙调节摆动连杆24,摇杆26的第三位置转动连接于固定端。The second position of the driving crank 30 is rotatably connected to the first end of the driving link 29, the second end of the driving link 29 is rotatably connected to the first position of the rocker 26, and the second position of the rocker 26 is rotatably connected to the lifting and adjusting swing The third position of the connecting rod 24 and the rocker 26 is rotatably connected to the fixed end.
显然,当驱动部2的输出轴旋转时,驱动曲柄30旋转,发生摆动,带动驱动连杆29摆动,进而驱动摇杆26摆动,最终实现抬牙调节摆动连杆24运动,调节前抬牙曲柄14和后抬牙曲柄16之间的夹角。Obviously, when the output shaft of the driving part 2 rotates, the drive crank 30 rotates and swings, which drives the drive link 29 to swing, and then drives the rocker 26 to swing, and finally realizes the movement of the swing link 24 for adjusting the teeth lifting and adjusting the front teeth lifting crank The included angle between 14 and the rear crank 16.
摇杆26的第一位置和摇杆26的第三位置分别位于摇杆26的两端,摇杆26的第二位置位于摇杆26的第一位置和摇杆26的第三位置之间。The first position of the rocker 26 and the third position of the rocker 26 are respectively located at two ends of the rocker 26, and the second position of the rocker 26 is located between the first position of the rocker 26 and the third position of the rocker 26.
如说明书附图6,第一连接孔261用以插入连杆销27,连杆销27将摇杆26和驱动连杆29转动连接,第二连接孔262用以插入摆动连杆销25,摆动连杆销25将摇杆26和抬牙调节摆动连杆24转动连接,第三连接孔263用以插入轴位连接件28,轴位连接件28将摇杆26转动连接于固定端。As shown in Fig. 6 of the specification, the first connecting hole 261 is used to insert the connecting rod pin 27, the connecting rod pin 27 rotationally connects the rocker 26 and the driving connecting rod 29, and the second connecting hole 262 is used to insert the swing connecting rod pin 25 to swing. The connecting rod pin 25 rotatably connects the rocker 26 and the tooth lifting adjustment swing link 24. The third connecting hole 263 is used for inserting the axial connection member 28, and the axial connection member 28 rotatably connects the rocker 26 to the fixed end.
参考说明书附图5,驱动部2可安装于支架31,支架31设有安装孔,轴位连接件28和安装孔配合,可将摇杆26转动连接于支架31。Referring to Fig. 5 of the specification, the driving part 2 can be installed on the bracket 31, and the bracket 31 is provided with a mounting hole. The shaft connector 28 cooperates with the mounting hole to connect the rocker 26 to the bracket 31 in rotation.
前抬牙曲柄14包括前锁紧端和前延伸端,前锁紧端和前延伸端相连,前锁紧端包绕于前抬牙轴12,前延伸端沿前抬牙轴12的径向外侧延伸,前抬牙轴12还可设有前抬牙轴套13,前抬牙轴套13可设于缝纫机的底板上。The front lifting crank 14 includes a front locking end and a front extension end. The front locking end and the front extension end are connected. The front locking end surrounds the front lifting shaft 12, and the front extension end is along the radial direction of the front lifting shaft 12 Extending from the outside, the front lifting shaft 12 can also be provided with a front lifting shaft sleeve 13 which can be arranged on the bottom plate of the sewing machine.
前抬牙曲柄14可一体设置,经折弯后形成前锁紧端和前延伸端,前锁紧端和前抬牙轴12可通过螺钉等锁紧,前延伸端用于和前抬牙摆动板20转动连接。前延伸端和前抬牙摆动板20的端部显然应设有转轴孔,以使前抬牙曲柄销19穿设转轴孔,实现前抬牙曲柄14和前抬牙摆动板20之间的转动连接。The front lifting crank 14 can be integrally arranged. After bending, a front locking end and a front extension end are formed. The front locking end and the front lifting shaft 12 can be locked by screws, etc. The front extension end is used to swing with the front lifting teeth The plate 20 is connected in rotation. Obviously, the front extension end and the end of the front lifting swing plate 20 should be provided with a rotating shaft hole, so that the front lifting crank pin 19 penetrates the rotating shaft hole to realize the rotation between the front lifting crank 14 and the front lifting swing plate 20 connect.
与前抬牙曲柄14类似地,后抬牙曲柄16包括后锁紧端和后延伸端,后锁紧端和后延伸端相连,后锁紧端包绕于后抬牙轴18,后延伸端沿后抬牙轴18的径向外侧延伸。后抬牙轴18还可设有后抬牙轴套17,后抬牙轴套17可设于缝纫机的底板上。后抬牙曲柄16可一体设置,经折弯后形成后锁紧端和后延伸端,后锁紧端和后抬牙轴18可通过螺钉等锁紧,后延伸端用于和后抬牙摆动板21转动连接。Similar to the front lifting crank 14, the rear lifting crank 16 includes a rear locking end and a rear extension end. The rear locking end and the rear extension end are connected, and the rear locking end is wrapped around the rear lifting shaft 18, and the rear extension end It extends along the radially outer side of the rear lifting shaft 18. The rear lifting shaft 18 may also be provided with a rear lifting shaft sleeve 17, and the rear lifting shaft sleeve 17 may be provided on the bottom plate of the sewing machine. The rear tooth lifting crank 16 can be integrally arranged. After bending, a rear locking end and a rear extension end are formed. The rear locking end and the rear lifting shaft 18 can be locked by screws or the like, and the rear extension end is used to swing with the rear lifting tooth The plate 21 is connected in rotation.
显然,后延伸端和后抬牙摆动板21的端部显然也应设有转轴孔,以使后抬牙曲柄销22穿设转轴孔,实现后抬牙曲柄16和后抬牙摆动板21之间的转动连接。Obviously, the rear extension end and the end of the rear tooth lifting swing plate 21 should obviously also be provided with a shaft hole, so that the rear tooth lifting crank pin 22 penetrates the shaft hole to realize the difference between the rear tooth lifting crank 16 and the rear tooth lifting swing plate 21 Rotating connection between.
在上述基础上,前抬牙曲柄14的前延伸端可设置前通槽,前通槽沿前抬牙轴12的径向延伸,前抬牙摆动板20的一端伸入前通槽中,前抬牙曲柄销19沿着前抬牙轴12轴向延伸,并穿设前通槽,将前抬牙摆动板20和前抬牙曲柄14的前延伸端转动连接。On the above basis, the front extension end of the front lifting crank 14 may be provided with a front through groove, which extends along the radial direction of the front lifting shaft 12, and one end of the front lifting swing plate 20 extends into the front through groove. The tooth-lifting crank pin 19 extends axially along the front tooth-lifting shaft 12 and passes through a front through groove to rotatably connect the front-lifting swing plate 20 and the front extension end of the front tooth-lifting crank 14.
前抬牙摆动板20的另一端和抬牙调节摆动连杆24之间可通过抬牙调节销15转动连接。后抬牙曲柄16的后延伸端可设置后通槽,后通槽沿后抬牙轴18的径向延伸,后抬牙摆动板21的一端伸入后通槽中,后抬牙曲柄销22沿着后抬牙轴18轴向延伸,并穿设后通槽,将后抬牙摆动板21和后抬牙曲柄16的后延伸端转动连接。后抬牙摆动板21的另一端和抬牙调节摆动连杆24之间可通过抬牙调节销15转动连接。The other end of the front lifting swing plate 20 and the lifting adjusting swing link 24 can be rotatably connected by the lifting adjusting pin 15. The rear extension end of the rear tooth lifting crank 16 can be provided with a rear through groove, which extends along the radial direction of the rear lifting shaft 18, one end of the rear lifting swing plate 21 extends into the rear through groove, and the rear lifting crank pin 22 It extends axially along the rear tooth-lifting shaft 18 and passes through a rear through groove to rotatably connect the rear tooth-lifting swing plate 21 and the rear extension end of the rear tooth-lifting crank 16. The other end of the rear tooth lifting swing plate 21 and the tooth lifting adjusting swing link 24 can be rotatably connected by the tooth lifting adjusting pin 15.
可以看出,前抬牙曲柄14、前抬牙曲柄销19和前抬牙摆动板20三者的设置方式类似于后抬牙曲柄16、后抬牙摆动板21和后抬牙曲柄销22三者的设置方式。It can be seen that the arrangement of the front lifting crank 14, the front lifting crank pin 19 and the front lifting swing plate 20 is similar to the rear lifting crank 16, the rear lifting swing plate 21 and the rear lifting crank pin 22. The way the person is set up.
本实施中优选前抬牙轴12和后抬牙轴18同轴设置,前抬牙曲柄14和后抬牙曲柄16两者的形状尺寸相同,且两者在沿前抬牙轴12的轴向方向的投影上呈人字形分布。In this embodiment, it is preferable that the front lifting shaft 12 and the rear lifting shaft 18 are arranged coaxially, and the shape and size of the front lifting crank 14 and the rear lifting crank 16 are the same, and they are arranged along the axial direction of the front lifting shaft 12 The projection of the direction is distributed in a herringbone shape.
在正常缝纫状态下,驱动部2上电锁紧,摇杆26此时固定在一个位置,以送料牙32处于最高点举例说明,此时机构状态见附图7所示。这该状态下,前抬牙摆动板20和后抬牙摆动板21处于一条直线上,前抬牙曲柄14和后抬牙曲柄16之间的夹角最大。In the normal sewing state, the driving part 2 is energized and locked, and the rocker 26 is fixed in a position at this time, and the feeding dog 32 is at the highest point as an example. At this time, the mechanism state is shown in FIG. 7. In this state, the front lifting swing plate 20 and the rear lifting swing plate 21 are in a straight line, and the angle between the front lifting crank 14 and the rear lifting crank 16 is the largest.
当上轴1带动送料偏心轮8转动时,通过抬牙连杆9驱动抬牙后曲柄11摆动,抬牙后曲柄11的摆动动作通过后抬牙轴18传递至驱动后抬牙曲柄16,使得后抬牙曲柄16摆动,通过前抬牙摆动板20、后抬牙摆动板21和抬牙调节摆动连杆24驱动前抬牙曲柄14做同摆幅摆动,前抬牙曲柄14通过前抬牙轴12带动抬牙叉型曲柄7摆动,实现送料牙在竖直方向上的往复运动。When the upper shaft 1 drives the feeding eccentric 8 to rotate, the tooth-lifting connecting rod 9 drives the tooth-lifting crank 11 to swing, and the swinging action of the tooth-lifting crank 11 is transmitted to the driving rear-lifting crank 16 through the rear-lifting shaft 18, so that The rear tooth-lifting crank 16 swings, and the front tooth-lifting swing plate 20, the rear-tooth-lifting swing plate 21 and the tooth-lifting adjustment swing link 24 drive the front-tooth-lifting crank 14 to swing at the same swing amplitude, and the front-tooth-lifting crank 14 passes the front tooth-lifting The shaft 12 drives the tooth-lifting fork-shaped crank 7 to swing to realize the reciprocating movement of the feeding tooth in the vertical direction.
送料偏心轮8的动力经过送料连杆10、送料摆动板座组件和送料轴6,最终驱动送料牙32在水平方向上的往复运动,最终实现送料牙32的缝纫运动轨迹。The power of the feeding eccentric wheel 8 passes through the feeding connecting rod 10, the feeding swing plate seat assembly and the feeding shaft 6, and finally drives the feeding dog 32 to reciprocate in the horizontal direction, and finally realizes the sewing movement track of the feeding dog 32.
当缝纫开始前,压脚抬起放置缝纫布料时,驱动部2顺时针转动,机构处于送料牙处于最低点状态,如说明书附图8所示。在此状态下,送料牙32处于针板33的下方,放置布料过程不会出现牙齿挂住布料的情况发生。当缝纫工况改变,需要调整送料牙32的高度时,驱动曲柄30顺时针转动,且能够停止在附图8与附图7对应的夹角范围内,驱动曲柄30在不同的位置停止时,前抬牙曲柄14与后抬牙曲柄16之间的相位夹角不同(可对比附图7和附图8),相位角越大则对应送料牙32的高度越高,相位角越小则对应送料牙32的高度越低,从而实现送料牙32的高度调节。Before sewing starts, when the presser foot is raised to place the sewing cloth, the driving part 2 rotates clockwise, and the mechanism is in the state where the feeding teeth are at the lowest point, as shown in Fig. 8 of the manual. In this state, the feed dog 32 is under the needle plate 33, and the cloth will not be caught by the teeth during the cloth placement process. When the sewing conditions change and the height of the feeding dog 32 needs to be adjusted, the drive crank 30 rotates clockwise and can stop within the angle range corresponding to FIG. 8 and FIG. 7. When the drive crank 30 stops at a different position, The phase angle between the front lifting crank 14 and the rear lifting crank 16 is different (compare Fig. 7 and Fig. 8). The larger the phase angle, the higher the height of the feed dog 32, and the smaller the phase angle is. The lower the height of the feeding dog 32 is, so that the height adjustment of the feeding dog 32 is realized.
本申请的另一个重点改进部分即为剪线驱动装置501,剪线驱动装置501可包括滚珠022、摆动部和传导部,滚珠022固设于剪线驱动部07,传导部和摆动部相连,当驱动部2驱动时,则摆动部会发生运动。当摆动部在驱动部2输出轴的作用下运动预设角度时,摆动部触发传导部运动,传导部作用于滚珠022,滚珠022和剪线凸轮05相抵,以使滚珠022和剪线凸轮05同步旋转。Another important improvement part of this application is the thread trimming drive device 501. The thread trimming drive device 501 may include a ball 022, a swinging part and a conductive part. The ball 022 is fixed to the thread trimming drive 07, and the conductive part is connected to the swinging part. When the driving part 2 is driven, the swing part will move. When the swing part moves a preset angle under the action of the output shaft of the driving part 2, the swing part triggers the movement of the conduction part, and the conduction part acts on the ball 022, and the ball 022 and the thread trimming cam 05 abut, so that the ball 022 and the thread trimming cam 05 Synchronous rotation.
剪线驱动轴01和下轴通常平行设置,在初始状态下,滚珠022和剪线凸轮05两者之间可设置一定的轴向间距,当驱动部2的输出轴旋转时,则可带动摆动部发生摆动,利用摆动部触发传导部运动,传导部将作用力传递至滚珠022,使得滚珠022沿轴向运动,用以和剪线凸轮05相抵,实现滚珠022和剪线凸轮05同步旋转。The thread trimming drive shaft 01 and the lower shaft are usually arranged in parallel. In the initial state, a certain axial distance can be set between the ball 022 and the thread trimming cam 05. When the output shaft of the drive unit 2 rotates, it can drive to swing The oscillating part is used to trigger the movement of the conduction part. The conduction part transmits the force to the ball 022 so that the ball 022 moves in the axial direction to resist the thread trimming cam 05 and realize the synchronous rotation of the ball 022 and the thread trimming cam 05.
可以看出,传导部和摆动部两者的主要作用是将驱动部2输出轴的旋转运动转化为轴向运动,传导部和摆动部两者的具体设置方式可以有多种,本文仅给出有限个较为优选的具体实施方式。It can be seen that the main function of both the conduction part and the swing part is to convert the rotational motion of the output shaft of the drive part 2 into axial motion. There can be many specific arrangements for the conduction part and the swing part, and only given in this article A limited number of more preferred specific implementations.
如说明书附图2、附图9至附图14,摆动部具体为旋转曲柄001,传导部具体为异形杆002,异形杆002包括位于同一面上的剪线斜面0021和等距面0022,异形杆002的端部和旋转曲柄001转动连接;剪线斜面0021和等距面0022两者可选择地和剪线驱动轴01接触。As shown in Figure 2 and Figure 9 to Figure 14 of the specification, the swing part is specifically a rotating crank 001, and the conduction part is specifically a special-shaped rod 002. The special-shaped rod 002 includes a cutting bevel surface 0021 and an isometric surface 0022 on the same surface. The end of the rod 002 is rotatably connected with the rotating crank 001; both the thread cutting inclined surface 0021 and the equidistant surface 0022 can selectively contact the thread cutting drive shaft 01.
在正常缝纫状态下,等距面0022和剪线驱动轴01接触,此时滚珠022和剪线凸轮05不接触,送料牙32和针板面的位置关系如说明书附图13所示。In the normal sewing state, the equidistant surface 0022 is in contact with the thread trimming drive shaft 01. At this time, the ball 022 and the thread trimming cam 05 are not in contact. The positional relationship between the feed dog 32 and the needle plate surface is shown in Figure 13 of the specification.
当需要进行剪线操作时,剪线斜面0021和剪线驱动轴01接触,此时剪线驱动轴01沿轴向移动,带动剪线驱动部07和滚珠022两者沿轴向移动,以使滚珠022和剪线凸轮05相抵,滚珠022和剪线凸轮05同步旋转。When the thread trimming operation is required, the thread trimming slope 0021 contacts the thread trimming drive shaft 01. At this time, the thread trimming drive shaft 01 moves in the axial direction, driving both the thread trimming drive part 07 and the ball 022 to move in the axial direction, so that The ball 022 and the thread trimming cam 05 collide, and the ball 022 and the thread trimming cam 05 rotate synchronously.
如说明书附图9和附图10,异形杆002的端部设有折弯段,折弯段包括两块间隔设置的安装板0023,两块安装板0023开设同轴的限位孔0024,旋转曲柄001的端部开设限位槽0011,限位销003的两端分别和两个限位孔0024配合,且限位销003和限位槽0011配合,以使异形杆002和旋转曲柄001转动连接。As shown in Figure 9 and Figure 10 of the specification, the end of the special-shaped rod 002 is provided with a bending section. The bending section includes two mounting plates 0023 arranged at intervals. The two mounting plates 0023 are provided with coaxial limiting holes 0024. The end of the crank 001 is provided with a limit slot 0011, the two ends of the limit pin 003 are respectively matched with the two limit holes 0024, and the limit pin 003 is matched with the limit slot 0011 to make the special-shaped rod 002 and the rotating crank 001 rotate connect.
当缝纫机的主控制器收到剪线信号时,驱动部2的输出轴逆时针转动(以说明书附图11所示的方位为例),带动旋转曲柄001逆时针转动,旋转曲柄001的限位槽0011驱动限位销003和异形杆002朝向右移动,剪线斜面0021抵触剪线驱动轴01的端部,并驱动剪线驱动轴向左移动(如说明书附图14所示),带动剪线驱动部07和滚珠022向左移动,滚珠022和剪线凸轮05抵靠,剪线凸轮05转动后驱动剪线组件5完成剪线动作。When the main controller of the sewing machine receives the thread trimming signal, the output shaft of the driving part 2 rotates counterclockwise (taking the orientation shown in Figure 11 of the manual as an example), driving the rotating crank 001 to rotate counterclockwise, and the limit of the rotating crank 001 The slot 0011 drives the limit pin 003 and the special-shaped rod 002 to move toward the right, the thread trimming slope 0021 abuts the end of the thread trimming drive shaft 01, and drives the thread trimming drive shaft to move to the left (as shown in Figure 14 of the manual), driving the shears The thread driving part 07 and the ball 022 move to the left, and the ball 022 abuts the thread trimming cam 05. After the thread trimming cam 05 rotates, the thread trimming assembly 5 is driven to complete the thread trimming action.
当剪线完成后,驱动部2的输出轴顺时针转动,带动异形杆002向左移动,剪线驱动轴01复位,进入等距面0022,在牙齿高度调节区间及下供区间,剪线驱动轴01的端部均不会和剪线斜面0021接触(如说明书附图12和附图13),也即抬牙和下供动作不会影响剪线,最终实现驱动部2驱动抬牙和剪线两个功能。When the thread trimming is completed, the output shaft of the drive unit 2 rotates clockwise, driving the special-shaped rod 002 to move to the left, the thread trimming drive shaft 01 resets, and enters the equidistant surface 0022. In the tooth height adjustment section and the lower supply section, the thread trimming drive The end of the shaft 01 will not be in contact with the thread cutting slope 0021 (as shown in Figure 12 and Figure 13 of the specification), that is, the action of lifting and lowering the thread will not affect the thread cutting, and finally realizes that the driving part 2 drives the lifting and cutting Line two functions.
实施例二:Embodiment two:
和上述实施例一不同的是,驱动部2可直接通过调节偏心轮301实现前抬牙曲柄14和后抬牙曲柄16两者之间的夹角改变;具体地,驱动部2的输出轴固设于调节偏心轮301的偏心孔,抬牙调节摆动连杆24的端部固设于调节偏心轮301的侧沿。The difference from the first embodiment above is that the driving part 2 can directly adjust the eccentric wheel 301 to realize the change of the included angle between the front lifting crank 14 and the rear lifting crank 16; specifically, the output shaft of the driving part 2 is fixed. The eccentric hole is provided in the adjusting eccentric wheel 301, and the end of the tooth lifting adjusting swing link 24 is fixed on the side edge of the adjusting eccentric wheel 301.
当驱动部2运动时,驱动部2的输出轴旋转,带动调节偏心轮301旋转,由于调节偏心轮301的偏心孔和驱动部2的输出轴固定连接,因此当 调节偏心轮301旋转时,调节偏心轮301的侧沿并非围绕定轴旋转,而是会发生摆动,由此带动抬牙调节摆动连杆24摆动,从而改变前抬牙曲柄14和后抬牙曲柄16两者之间的夹角,以使前抬牙轴12和后抬牙轴18两者发生相对转动,如说明书附图15和附图16所示。When the driving part 2 moves, the output shaft of the driving part 2 rotates, driving the adjustment eccentric 301 to rotate. Since the eccentric hole of the adjustment eccentric 301 is fixedly connected with the output shaft of the driving part 2, when the adjustment eccentric 301 rotates, the adjustment The side edge of the eccentric wheel 301 does not rotate around a fixed axis, but will swing, thereby driving the lifting adjustment swing link 24 to swing, thereby changing the angle between the front lifting crank 14 and the rear lifting crank 16 , So that the front lifting shaft 12 and the rear lifting shaft 18 are relatively rotated, as shown in FIG. 15 and FIG. 16 of the specification.
除此之外,前抬牙曲柄14的前延伸端亦可不设置前通槽,前抬牙摆动板20位于前抬牙曲柄14前延伸端的一侧,利用前抬牙曲柄销19同样可以实现前抬牙曲柄14和前抬牙摆动板20的转动连接,如说明书附图9和附图10所示。In addition, the front extension end of the front lifting crank 14 may not be provided with a front through groove. The front lifting swing plate 20 is located on one side of the front extension end of the front lifting crank 14. The front lifting crank pin 19 can also be used to achieve the front The rotation connection of the tooth lifting crank 14 and the front tooth lifting swing plate 20 is as shown in FIG. 9 and FIG. 10 of the specification.
与之类似地是,后抬牙曲柄16和后抬牙摆动板21之间的转动连接方式,可参考上述不同形式,本文将不再赘述。Similarly, the rotational connection between the rear-lifting crank 16 and the rear-lifting swing plate 21 can refer to the above-mentioned different forms, which will not be repeated here.
针对剪线驱动装置501的具体设置方式,如说明书附图17和附图18,由于实施例二中采用调节偏心轮301而非实施例一种的连杆机构,因此剪线驱动装置501也应做出相应的改进。Regarding the specific setting of the thread cutting drive device 501, as shown in FIG. 17 and FIG. 18 of the specification, since the adjusting eccentric 301 is used in the second embodiment instead of the linkage mechanism of the first embodiment, the thread cutting drive device 501 should also be used. Make corresponding improvements.
摆动部具体为剪线杠杆024,剪线杠杆024的第一端转动连接于固定位置,剪线杠杆024的第二端和调节偏心轮301滑动配合;传导部设于远离剪线杠杆024第二端的位置上,当调节偏心轮301旋转预设角度时,剪线杠杆024旋转,在剪线杠杆024的带动下,传导部推动剪线驱动部07,以使滚珠022和剪线凸轮05相抵。The swing part is specifically the thread trimming lever 024. The first end of the thread trimming lever 024 is rotatably connected to a fixed position. The second end of the thread trimming lever 024 is in sliding fit with the adjusting eccentric 301; the conduction part is located away from the thread trimming lever 024. At the end position, when the eccentric wheel 301 rotates by a preset angle, the thread trimming lever 024 rotates. Driven by the thread trimming lever 024, the conductive part pushes the thread trimming drive part 07 so that the ball 022 and the thread trimming cam 05 abut against each other.
剪线杠杆024的第一端可转动连接在支架31上,剪线杠杆024的第二端可设置滚动部025,滚动部025用以和调节偏心轮301的侧沿滚动配合。The first end of the thread trimming lever 024 can be rotatably connected to the bracket 31, and the second end of the thread trimming lever 024 can be provided with a rolling part 025, which is used for rolling cooperation with the side edge of the adjusting eccentric 301.
传导部可具体为呈折弯状的推动端09,推动端09和剪线杠杆024两者可为一体成型,大体呈V字型,推动端09的端部用以和位于剪线驱动部07端部的剪线驱动抵靠面08相抵,剪线驱动抵靠面08的侧沿设置滚珠022。其中,剪线驱动部07、剪线驱动抵靠面08和滚珠022三者可为一体成型设置。The conduction part can be specifically a bent push end 09. Both the push end 09 and the thread trimming lever 024 can be integrally formed and are generally V-shaped. The thread trimming drive abutment surface 08 at the end abuts, and the side edge of the thread trimming drive abutment surface 08 is provided with balls 022. Among them, the thread trimming drive portion 07, the thread trimming drive abutment surface 08 and the ball 022 can be integrally formed.
剪线驱动抵靠面08的端面大于剪线驱动部07的截面,以增大推动端09的接触面积,剪线驱动抵靠面08位于剪线驱动轴01的径向方向上。The end surface of the thread trimming drive abutting surface 08 is larger than the cross section of the thread trimming drive portion 07 to increase the contact area of the pushing end 09, and the thread trimming drive abutment surface 08 is located in the radial direction of the thread trimming drive shaft 01.
正常缝纫状态下,驱动部2的输出轴位于说明书附图19示出的牙齿高度调节区间,送料牙32的高度可通过缝纫机主控制器参数进行控制;当牙 齿高度需要增大时,驱动部2的输出轴顺时针转动,调节偏心轮301驱动抬牙调节摆动连杆24运动。In the normal sewing state, the output shaft of the driving part 2 is located in the tooth height adjustment section shown in Figure 19 of the specification. The height of the feeding teeth 32 can be controlled by the parameters of the main controller of the sewing machine; when the tooth height needs to be increased, the driving part 2 The output shaft rotates clockwise, and the adjusting eccentric wheel 301 drives the tooth-lifting adjusting swing link 24 to move.
以送料牙从较低的位置调节到最高的位置举例,前抬牙曲柄14、前抬牙摆动板20、后抬牙摆动板21和后抬牙曲柄16组成的四边形形状发生变化,前抬牙曲柄14和后抬牙曲柄16组成的夹角为最大状态,如说明书附图21所示,此时前抬牙轴12和后抬牙轴18之间的相位角最大,通过送料组件3传递运动状态后,送料牙32即可达到位置最高处,如说明书附图21所示。Taking the feeding teeth adjusted from the lower position to the highest position as an example, the quadrilateral shape composed of the front lifting crank 14, the front lifting swing plate 20, the rear lifting swing plate 21 and the rear lifting crank 16 changes, and the front lifting crank The angle formed by the crank 14 and the rear crank 16 is the maximum state, as shown in Figure 21 of the specification, at this time the phase angle between the front crank 12 and the rear crank 18 is the largest, and the movement is transmitted through the feed assembly 3. After the state, the feeding teeth 32 can reach the highest position, as shown in Figure 21 of the specification.
当开始抬压脚动作时,驱动部2的输出轴位于说明书附图19示出的牙齿高度(送料牙32的高度)急速下降区间,驱动部2的输出轴顺时针转动,调节偏心轮301驱动抬牙调节摆动连杆24运动,前抬牙曲柄14和后抬牙曲柄16组成的夹角急剧减小,如说明书附图20所示,此时前抬牙轴12和后抬牙轴18之间的相位角最小,通过送料组件3传递运动状态后,送料牙32处于针板面以下,如说明书附图20,此时可以对缝纫布料进行更换或移动动作,避免送料牙32挂布的缺陷。When the presser foot is lifted, the output shaft of the drive unit 2 is located in the rapid decline section of the tooth height (the height of the feeding teeth 32) shown in FIG. When the swing link 24 is adjusted by lifting the teeth, the angle formed by the front lifting crank 14 and the rear lifting crank 16 decreases sharply. The phase angle between the two is the smallest. After the movement state is transmitted through the feeding assembly 3, the feeding dog 32 is below the needle plate surface, as shown in Figure 20 of the manual. At this time, the sewing cloth can be replaced or moved to avoid the defect of the feeding dog 32 hanging cloth. .
当需要剪线动作时,驱动部2的输出轴逆时针转动,从牙齿高度调节区间转动到剪线区间,调节偏心轮301驱动抬牙调节摆动连杆24运动,前抬牙曲柄14、前抬牙摆动板20、后抬牙摆动板21、后抬牙曲柄16组成的四边形形状发生变化,前抬牙曲柄14和后抬牙曲柄16组成的夹角先增大到说明书附图21所示的状态,再变化到说明书附图22所示的状态,送料牙32的高度降低到针板平面附近。前抬牙曲柄14和后抬牙曲柄16之间的夹角经过最大角之后,调节偏心轮301驱动滚动部025,滚动部025带动剪线杠杆024围绕杠杆轴位螺钉027逆时针转动,剪线杠杆024和剪线驱动抵靠面08接触后,剪线驱动部07沿剪线驱动轴01的轴向左移,此时滚珠022在剪线凸轮05的驱动下带动剪线驱动部07转动,最终带动剪线组件5完成剪线动作。When the thread trimming action is required, the output shaft of the driving part 2 rotates counterclockwise, from the tooth height adjustment interval to the thread trimming interval, the eccentric wheel 301 is adjusted to drive the tooth lifting adjustment swing link 24 to move, the front tooth lifting crank 14, front lifting The quadrilateral shape composed of the tooth swing plate 20, the rear tooth lifting swing plate 21, and the rear tooth lifting crank 16 changes, and the angle formed by the front tooth lifting crank 14 and the rear tooth lifting crank 16 is first increased to that shown in Figure 21 of the specification. The state changes to the state shown in Fig. 22 of the specification, and the height of the feed dog 32 is lowered to near the plane of the needle plate. After the included angle between the front crank 14 and the rear crank 16 has passed the maximum angle, the eccentric wheel 301 is adjusted to drive the rolling part 025, and the rolling part 025 drives the thread trimming lever 024 to rotate counterclockwise around the lever shaft screw 027 to trim the thread After the lever 024 contacts the thread trimming drive abutting surface 08, the thread trimming drive part 07 moves to the left along the axis of the thread trimming drive shaft 01. At this time, the ball 022 drives the thread trimming drive part 07 to rotate under the drive of the thread trimming cam 05. Finally, the thread trimming assembly 5 is driven to complete the thread trimming action.
参考说明书附图17和附图18,抬牙剪线组件还包括剪线支架028,剪线支架028可固定于支架31,剪线杠杆024转动连接于剪线支架028,复位弹簧023套设于固定在剪线支架028上的杠杆限位销026,复位弹簧023 位于剪线杠杆024和传导部之间的夹角处,以使剪线杠杆024复位至未推动剪线驱动部07的位置上;剪线驱动部07和弹性部06相连,以使剪线驱动部07复位至未被剪线杠杆024推动的位置上。With reference to Figure 17 and Figure 18 of the specification, the lifting thread trimming assembly also includes a trimming bracket 028, the trimming bracket 028 can be fixed to the bracket 31, the trimming lever 024 is rotatably connected to the trimming bracket 028, and the return spring 023 is sleeved on The lever limit pin 026 fixed on the thread trimming bracket 028, the return spring 023 is located at the angle between the thread trimming lever 024 and the conducting part, so that the thread trimming lever 024 is reset to the position where the thread trimming drive part 07 is not pushed The thread trimming drive portion 07 and the elastic portion 06 are connected to reset the thread trimming drive portion 07 to a position not pushed by the thread trimming lever 024.
以说明书附图18所示的方位为例,剪线支架028的上表面设有位于左侧的第一孔和位于右侧的第二孔,剪线杠杆024设有第一通孔和第二通孔,杠杆轴位螺钉027由上自下依次穿设剪线杠杆024的第一通孔和剪线支架028的第一孔,以使剪线杠杆024可以杠杆轴位螺钉027为轴旋转。滚动部025转动连接于剪线杠杆024的第二通孔,滚动部025可相对于剪线杠杆024旋转,以减轻滚动部025的磨损。剪线支架028的第二孔和杠杆限位销026固定连接,复位弹簧023可设置为扭簧等部件。Taking the orientation shown in FIG. 18 of the specification as an example, the upper surface of the thread trimming bracket 028 is provided with a first hole on the left side and a second hole on the right side, and the thread trimming lever 024 is provided with a first through hole and a second hole. Through holes, the lever axis screw 027 passes through the first through hole of the thread trimming lever 024 and the first hole of the thread trimming bracket 028 from top to bottom, so that the thread trimming lever 024 can rotate with the lever axis screw 027 as an axis. The rolling portion 025 is rotatably connected to the second through hole of the thread trimming lever 024, and the rolling portion 025 can rotate relative to the thread trimming lever 024 to reduce the wear of the rolling portion 025. The second hole of the thread trimming bracket 028 is fixedly connected to the lever limit pin 026, and the return spring 023 can be set as a torsion spring or other components.
弹性部06和剪线驱动抵靠面08分别位于剪线驱动部07的两端,当推动端09推动剪线驱动部07沿剪线驱动轴01的轴向移动时,弹性部06被压缩,弹性部06的左端可抵于固定位置上,当剪线驱动部07未受到推动端09的推动力时,则弹性部06的弹性力释放,将剪线驱动部07、剪线驱动抵靠面08和滚珠022三者复位至未被推动端09推动的位置上。The elastic portion 06 and the thread trimming drive abutment surface 08 are respectively located at the two ends of the thread trimming drive portion 07. When the pushing end 09 pushes the thread trimming drive portion 07 to move along the axial direction of the thread trimming drive shaft 01, the elastic portion 06 is compressed. The left end of the elastic part 06 can be pressed against a fixed position. When the thread cutting driving part 07 is not pushed by the pushing end 09, the elastic force of the elastic part 06 is released, and the thread cutting driving part 07 and the thread cutting driving abutment surface are released. 08 and the ball 022 are reset to the position not pushed by the pushing end 09.
继续以上文所描述的运行过程为例,在剪线动作的同时,送料牙32处于较低状态,可以进一步降低剪线线头长度,剪线完成后,驱动部2的输出轴顺时针转动进入牙齿高度调节区间,在弹性部06的作用下复位,剪线杠杆024在复位弹簧023的作用下复位,抵靠在杠杆限位销026上。Continuing the operation process described above as an example, while the thread is trimming, the feeding dog 32 is in a lower state, which can further reduce the length of the thread head. After the thread is trimmed, the output shaft of the driving part 2 rotates clockwise and enters the tooth. The height adjustment interval is reset under the action of the elastic part 06, and the thread trimming lever 024 is reset under the action of the reset spring 023 and abuts against the lever limit pin 026.
实施例三:Embodiment three:
本发明所提供的一种具有抬牙剪线组件的缝纫机,包括上述实施例一和实施例二所描述的抬牙剪线组件;缝纫机的其他部分可以参照现有技术,本文不再展开。The present invention provides a sewing machine with a thread lifting and trimming assembly, including the thread lifting and trimming assembly described in the first and second embodiments; other parts of the sewing machine can refer to the prior art and will not be expanded here.
需要说明的是,在本说明书中,诸如第一和第二之类的关系术语仅仅用来将一个实体与另外几个实体区分开来,而不一定要求或者暗示这些实体之间存在任何这种实际的关系或者顺序。It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any such existence between these entities. The actual relationship or order.
以上对本发明所提供的抬牙剪线组件和具有该抬牙剪线组件的缝纫机进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。 应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以对本发明进行若干改进和修饰,这些改进和修饰也落入本发明权利要求的保护范围内。The thread lifting and cutting thread assembly provided by the present invention and the sewing machine with the thread lifting and cutting thread assembly have been described in detail above. Specific examples are used in this article to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

  1. 一种抬牙剪线组件,包括驱动部(2),其特征在于,还包括平行设置的前抬牙轴(12)以及后抬牙轴(18),所述前抬牙轴(12)固设有前抬牙曲柄(14),所述后抬牙轴(18)固设有后抬牙曲柄(16),所述前抬牙曲柄(14)转动连接有前抬牙摆动板(20)的第一端,所述后抬牙曲柄(16)转动连接有后抬牙摆动板(21)的第一端;A thread-raising and trimming assembly includes a driving part (2), and is characterized in that it also includes a front-raising shaft (12) and a rear-raising shaft (18) which are arranged in parallel, and the front-raising shaft (12) is fixed A front tooth lifting crank (14) is provided, the rear tooth lifting shaft (18) is fixedly provided with a rear tooth lifting crank (16), and the front tooth lifting crank (14) is rotatably connected with a front tooth lifting swing plate (20) The first end of the rear tooth lifting crank (16) is rotatably connected to the first end of the rear tooth lifting swing plate (21);
    所述驱动部(2)连接有抬牙驱动装置和剪线驱动装置,所述前抬牙摆动板(20)的第二端和所述后抬牙摆动板(21)的第二端两者分别转动相连于所述抬牙驱动装置的一端;经所述驱动部(2)驱动后,所述前抬牙曲柄(14)和所述后抬牙曲柄(16)两者之间的夹角改变,以使所述前抬牙轴(12)和所述后抬牙轴(18)两者发生相对转动,以调节送料牙的高度;The driving part (2) is connected with a tooth lifting driving device and a thread trimming driving device, and both the second end of the front tooth lifting swing plate (20) and the second end of the rear tooth lifting swing plate (21) Rotatingly connected to one end of the tooth lifting driving device; after being driven by the driving part (2), the angle between the front tooth lifting crank (14) and the rear tooth lifting crank (16) Change so that the front lifting tooth shaft (12) and the rear lifting tooth shaft (18) both rotate relative to each other, so as to adjust the height of the feeding tooth;
    所述剪线驱动装置连接剪线驱动部(07);经所述驱动部(2)驱动后,所述剪线驱动部(07)能够和剪线凸轮(05)同步旋转,以实现剪线。The thread trimming drive device is connected to the thread trimming drive part (07); after being driven by the drive part (2), the thread trimming drive part (07) can rotate synchronously with the thread trimming cam (05) to realize thread trimming .
  2. 根据权利要求1所述的抬牙剪线组件,其特征在于,所述抬牙驱动装置包括抬牙调节摆动连杆(24),所述前抬牙摆动板(20)的第二端和所述后抬牙摆动板(21)的第二端两者分别转动连接于所述抬牙调节摆动连杆(24)的一端,所述抬牙调节摆动连杆(24)通过传动装置连接所述驱动部(2),当所述驱动部(2)驱动后,所述抬牙调节摆动连杆(24)摆动。The thread lifting and cutting assembly according to claim 1, characterized in that the driving device for lifting the teeth comprises a lifting adjustment swing link (24), the second end of the front lifting swing plate (20) and the The second ends of the teeth lifting swing plate (21) are respectively rotatably connected to one end of the teeth lifting adjustment swing link (24), and the teeth lifting adjustment swing link (24) is connected to the The driving part (2), when the driving part (2) is driven, the tooth lifting adjusting swing link (24) swings.
  3. 根据权利要求2所述的抬牙剪线组件,其特征在于,所述剪线驱动装置包括滚珠(022)、摆动部和传导部,所述滚珠(022)固设于所述剪线驱动部(07),所述传导部和所述摆动部相连,当所述摆动部在所述驱动部(2)输出轴的作用下运动预设角度时,所述摆动部触发所述传导部运动,所述滚珠(022)在所述传导部的运动作用下和所述剪线凸轮(05)相抵,以使所述滚珠(022)和所述剪线凸轮(05)同步旋转。The thread-lifting and thread-cutting assembly according to claim 2, wherein the thread-cutting drive device comprises a ball (022), a swinging part and a conducting part, and the ball (022) is fixed on the thread-cutting drive part. (07), the conducting part is connected to the swinging part, and when the swinging part moves a preset angle under the action of the output shaft of the driving part (2), the swinging part triggers the conducting part to move, The ball (022) is against the thread trimming cam (05) under the action of the conductive part, so that the ball (022) and the thread trimming cam (05) rotate synchronously.
  4. 根据权利要求3所述的抬牙剪线组件,其特征在于,所述传动装置包括摇杆(26)、驱动连杆(29)和驱动曲柄(30),所述驱动曲柄(30)的第一位置和所述驱动部(2)的输出轴固定相连,所述驱动曲柄(30)的第二位置转动连接于所述驱动连杆(29)的第一端,所述驱动连杆(29)的第二端转动连接所述摇杆(26)的第一位置,所述摇杆(26)的第二位 置转动连接所述抬牙调节摆动连杆(24),所述摇杆(26)的第三位置转动连接于固定端。The thread lifting and trimming assembly according to claim 3, characterized in that the transmission device comprises a rocker (26), a driving connecting rod (29) and a driving crank (30), and the first part of the driving crank (30) A position is fixedly connected with the output shaft of the driving part (2), the second position of the driving crank (30) is rotatably connected to the first end of the driving connecting rod (29), and the driving connecting rod (29) The second end of the rocker (26) is rotatably connected to the first position of the rocker (26), and the second position of the rocker (26) is rotatably connected to the tooth lifting adjustment swing link (24), and the rocker (26) The third position of) is rotatably connected to the fixed end.
  5. 根据权利要求4所述的抬牙剪线组件,其特征在于,所述剪线驱动部(07)固设于剪线驱动轴(01),所述摆动部具体为旋转曲柄(001),所述传导部具体为异形杆(002),所述异形杆(002)包括位于同一面上的剪线斜面(0021)和等距面(0022),所述异形杆(002)的端部和所述旋转曲柄(001)转动连接;所述剪线斜面(0021)和所述等距面(0022)两者可选择地和所述剪线驱动轴(01)接触;The thread-lifting and thread-cutting assembly according to claim 4, characterized in that the thread-cutting drive part (07) is fixed to the thread-cutting drive shaft (01), and the swing part is specifically a rotating crank (001). The conducting part is specifically a special-shaped rod (002), the special-shaped rod (002) includes a cutting bevel (0021) and an isometric surface (0022) on the same surface, the end of the special-shaped rod (002) and the The rotating crank (001) is rotationally connected; both the thread trimming inclined surface (0021) and the equidistant surface (0022) can be selectively contacted with the thread trimming drive shaft (01);
    当所述剪线斜面(0021)和所述剪线驱动轴(01)接触时,所述滚珠(022)和所述剪线凸轮(05)相抵,以使所述滚珠(022)和所述剪线凸轮(05)同步旋转。When the thread trimming slope (0021) contacts the thread trimming drive shaft (01), the ball (022) and the thread trimming cam (05) abut against each other, so that the ball (022) and the thread trimming cam (05) abut The thread trimming cam (05) rotates synchronously.
  6. 根据权利要求5所述的抬牙剪线组件,其特征在于,所述异形杆(002)的端部设有折弯段,所述折弯段包括两块间隔设置的安装板(0023),两块所述安装板(0023)开设同轴的限位孔(0024),所述旋转曲柄(001)的端部开设限位槽(0011),限位销(003)的两端分别和两个所述限位孔(0024)配合,且所述限位销(003)和所述限位槽(0011)配合,以使所述异形杆(002)和所述旋转曲柄(001)转动连接。The thread lifting and trimming assembly according to claim 5, characterized in that the end of the special-shaped rod (002) is provided with a bending section, and the bending section includes two mounting plates (0023) arranged at intervals, The two mounting plates (0023) are provided with coaxial limit holes (0024), the end of the rotating crank (001) is provided with a limit slot (0011), and the two ends of the limit pin (003) are connected to two One of the limiting holes (0024) is matched, and the limiting pin (003) is matched with the limiting groove (0011), so that the special-shaped rod (002) and the rotating crank (001) are rotatably connected .
  7. 根据权利要求3所述的抬牙剪线组件,其特征在于,所述传动装置具体为调节偏心轮(301),所述驱动部(2)的输出轴固设于所述调节偏心轮(301)的偏心孔,所述抬牙调节摆动连杆(24)的端部转动连接于所述调节偏心轮(301);The thread lifting and trimming assembly according to claim 3, characterized in that the transmission device is specifically an adjusting eccentric wheel (301), and the output shaft of the driving part (2) is fixed on the adjusting eccentric wheel (301). ), the end of the tooth lifting adjusting swing link (24) is rotatably connected to the adjusting eccentric wheel (301);
    所述摆动部具体为剪线杠杆(024),所述剪线杠杆(024)的第一端转动连接于固定位置,所述剪线杠杆(024)的第二端和所述调节偏心轮(301)滑动配合;The swing part is specifically a thread trimming lever (024), the first end of the thread trimming lever (024) is rotatably connected to a fixed position, the second end of the thread trimming lever (024) and the adjusting eccentric wheel ( 301) Sliding fit;
    所述传导部设于远离所述剪线杠杆(024)第二端的位置上,当所述调节偏心轮(301)旋转预设角度时,所述剪线杠杆(024)旋转,在所述剪线杠杆(024)的带动下,所述传导部推动所述剪线驱动部(07),以使所述滚珠(022)和所述剪线凸轮(05)相抵。The conducting part is arranged at a position far away from the second end of the thread trimming lever (024). When the adjusting eccentric wheel (301) rotates by a preset angle, the thread trimming lever (024) rotates, and the thread trimmer Driven by the thread lever (024), the conductive part pushes the thread trimming drive part (07) so that the ball (022) and the thread trimming cam (05) abut against each other.
  8. 根据权利要求7所述的抬牙剪线组件,其特征在于,还包括剪线支 架(028),所述剪线杠杆(024)转动连接于所述剪线支架(028),所述剪线支架(028)设有杠杆限位销(026),所述杠杆限位销(026)套设有复位弹簧(023),所述复位弹簧(023)位于所述剪线杠杆(024)和所述传导部之间的夹角处,以使所述剪线杠杆(024)复位至未推动所述剪线驱动部(07)的位置上;所述剪线驱动部(07)和弹性部(06)相连,以使所述剪线驱动部(07)复位至未被所述传导部推动的位置上。The thread-raising and thread-cutting assembly of claim 7, further comprising a thread-cutting bracket (028), the thread-cutting lever (024) is rotatably connected to the thread-cutting bracket (028), and the thread-cutting The bracket (028) is provided with a lever limit pin (026), the lever limit pin (026) is sleeved with a return spring (023), and the return spring (023) is located between the thread trimming lever (024) and the The angle between the conductive parts, so that the thread trimming lever (024) is reset to the position where the thread trimming driving part (07) is not pushed; the thread trimming driving part (07) and the elastic part ( 06) is connected to reset the thread trimming drive part (07) to a position not pushed by the conducting part.
  9. 根据权利要求1-8任意一项所述的抬牙剪线组件,其特征在于,所述前抬牙曲柄(14)包括前锁紧端和前延伸端,所述前锁紧端和所述前延伸端相连,所述前锁紧端包绕于所述前抬牙轴(12),所述前延伸端沿所述前抬牙轴(12)的径向外侧延伸,和/或;The tooth-lifting and cutting thread assembly according to any one of claims 1-8, wherein the front tooth-lifting crank (14) comprises a front locking end and a front extension end, and the front locking end and the The front extension ends are connected, the front locking end wraps around the front lifting shaft (12), and the front extension end extends along the radial outside of the front lifting shaft (12), and/or;
    所述后抬牙曲柄(16)包括后锁紧端和后延伸端,所述后锁紧端和所述后延伸端相连,所述后锁紧端包绕于所述后抬牙轴(18),所述后延伸端沿所述后抬牙轴(18)的径向外侧延伸。The rear lifting crank (16) includes a rear locking end and a rear extension end, the rear locking end is connected to the rear extension end, and the rear locking end is wrapped around the rear lifting shaft (18). ), the rear extension end extends along the radially outer side of the rear lifting shaft (18).
  10. 一种缝纫机,其特征在于,包括如权利要求1至9任意一项所述的抬牙剪线组件。A sewing machine, characterized by comprising the thread lifting and trimming assembly according to any one of claims 1-9.
PCT/CN2020/107007 2020-03-19 2020-08-05 Feed lifting rock trimming assembly and sewing machine comprising same WO2021184647A1 (en)

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